pg_send_query(3) [php man page]

PG_SEND_QUERY(3)														  PG_SEND_QUERY(3)

pg_send_query - Sends asynchronous query

SYNOPSIS

       bool pg_send_query (resource  $connection, string  $query)

DESCRIPTION

       pg_send_query(3)  sends	a  query or queries asynchronously to the $connection. Unlike pg_query(3), it can send multiple queries at once to
       PostgreSQL and get the results one by one using pg_get_result(3).

	Script execution is not blocked while the queries are executing. Use pg_connection_busy(3) to check if the connection is  busy	(i.e.  the
       query is executing). Queries may be cancelled using pg_cancel_query(3).

	Although  the user can send multiple queries at once, multiple queries cannot be sent over a busy connection. If a query is sent while the
       connection is busy, it waits until the last query is finished and discards all its results.

PARAMETERS

	      o $connection
		- PostgreSQL database connection resource.

	      o $query
		- The SQL statement or statements to be executed.  Data inside the query should be properly escaped.

RETURN VALUES

       Returns TRUE on success or FALSE on failure.

	Use pg_get_result(3) to determine the query result.

EXAMPLES

       Example #1

	      pg_send_query(3) example

	      <?php
		$dbconn = pg_connect("dbname=publisher") or die("Could not connect");

		if (!pg_connection_busy($dbconn)) {
		    pg_send_query($dbconn, "select * from authors; select count(*) from authors;");
		}

		$res1 = pg_get_result($dbconn);
		echo "First call to pg_get_result(): $res1
";
		$rows1 = pg_num_rows($res1);
		echo "$res1 has $rows1 records

";

		$res2 = pg_get_result($dbconn);
		echo "Second call to pg_get_result(): $res2
";
		$rows2 = pg_num_rows($res2);
		echo "$res2 has $rows2 records
";
	      ?>

	      The above example will output:

	      First call to pg_get_result(): Resource id #3
	      Resource id #3 has 3 records

	      Second call to pg_get_result(): Resource id #4
	      Resource id #4 has 1 records

SEE ALSO

       pg_query(3), pg_cancel_query(3), pg_get_result(3), pg_connection_busy(3).

PHP Documentation Group 													  PG_SEND_QUERY(3)

PG_SEND_EXECUTE(3)														PG_SEND_EXECUTE(3)

pg_send_execute - Sends a request to execute a prepared statement with given parameters, without waiting for the result(s).

SYNOPSIS

       bool pg_send_execute (resource  $connection, string  $stmtname, array  $params)

DESCRIPTION

	Sends a request to execute a prepared statement with given parameters, without waiting for the result(s).

	This is similar to pg_send_query_params(3), but the command to be executed is specified by naming a previously-prepared statement, instead
       of giving a query string. The function's parameters are handled identically to pg_execute(3). Like  pg_execute(3),  it  will  not  work	on
       pre-7.4 versions of PostgreSQL.

PARAMETERS

	      o $connection
		- PostgreSQL database connection resource. When $connection is not present, the default connection is used. The default connection
		is the last connection made by pg_connect(3) or pg_pconnect(3).

	      o $stmtname
		- The name of the prepared statement to execute. if "" is specified, then the unnamed statement is executed. The  name	must  have
		been previously prepared using pg_prepare(3), pg_send_prepare(3) or a PREPARE SQL command.

	      o $params
		-  An  array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string. The number
		of elements in the array must match the number of placeholders.

RETURN VALUES

       Returns TRUE on success, FALSE on failure. Use pg_get_result(3) to determine the query result.

EXAMPLES

       Example #1

	      Using pg_send_execute(3)

	      <?php
		$dbconn = pg_connect("dbname=publisher") or die("Could not connect");

		// Prepare a query for execution
		if (!pg_connection_busy($dbconn)) {
		  pg_send_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');
		  $res1 = pg_get_result($dbconn);
		}

		// Execute the prepared query.	Note that it is not necessary to escape
		// the string "Joe's Widgets" in any way
		if (!pg_connection_busy($dbconn)) {
		  pg_send_execute($dbconn, "my_query", array("Joe's Widgets"));
		  $res2 = pg_get_result($dbconn);
		}

		// Execute the same prepared query, this time with a different parameter
		if (!pg_connection_busy($dbconn)) {
		  pg_send_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));
		  $res3 = pg_get_result($dbconn);
		}

	      ?>

SEE ALSO

       pg_prepare(3), pg_send_prepare(3), pg_execute(3).

PHP Documentation Group 													PG_SEND_EXECUTE(3)